Home / 57,136.96-85,672.62-30,450.09

Finding the Fourth Proportional to 57,136.96, 85,672.62 and 30,450.09

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Solution

The fourth proportional to 57,136.96, 85,672.62 and 30,450.09 is: 45,657.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,136.96 : 85,672.62 = 30,450.09 : x
  2. Step 2: Convert to fraction form
    57,136.96/85,672.62 = 30,450.09/x
  3. Step 3: Cross multiply
    57,136.96x = 85,672.62 × 30,450.09
  4. Step 4: Simplify right side
    57,136.96x = 2,608,738,989.54
  5. Step 5: Solve for x
    x = 2,608,738,989.54/57,136.96
  6. Step 6: Final answer
    x = 45,657.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.